MINOR: includes: fix a lot of missing or useless includes
These modifications are done for resolving cross-dependent
includes in the upcoming LUA code.
<proto/channel.h> misses <types/channel.h>.
<types/acl.h> doesn't use <types/session.h> because the session
is already declared in the file as undefined pointer.
appsession.c misses <unistd.h> to use "write()".
Declare undefined pointer "struct session" for <types/proxy.h>
and <types/queue.h>. These includes dont need the detail of this
struct.
diff --git a/include/types/queue.h b/include/types/queue.h
index 922aa92..9ff8df5 100644
--- a/include/types/queue.h
+++ b/include/types/queue.h
@@ -26,7 +26,8 @@
#include <common/mini-clist.h>
#include <types/server.h>
-#include <types/session.h>
+
+struct session;
struct pendconn {
struct list list; /* chaining ... */